These force laws, together with the laws of motion, are the foundations of classical mechanics. They are based on experimental observations and were formulated more than three centuries ago by Isaac Newton (1642-1727). | ||||||||||||||||||||||||||||||||||||||||||
1st Law of Motion: | ||||||||||||||||||||||||||||||||||||||||||
An object at rest remains at rest and an object in motion will continue in motion with a constant velocity (that is, constant speed in a straight line) unless it experiences a net external force. | ||||||||||||||||||||||||||||||||||||||||||
In other words, when the net force on a body is zero, its acceleration is zero. That is, when , then a = 0. | ||||||||||||||||||||||||||||||||||||||||||
Where F is the force on a body and a is its acceleration. | ||||||||||||||||||||||||||||||||||||||||||
Newton's first law is sometimes termed simply the "Law of Inertia".
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Monday 29 July 2013
NEWTON'S LAWS OF MOTION
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